#include

using namespace std;

class Base

$\{$

private:

int x;

public:

Base$()$;

Base$($int x$)\{$x $=$ x;$\}$

virtual void fun$()$;

void getX$()\{$ return x; $\}$

$\}$;

Base : Base$()$

$\{$ x $=999$;$\}$

class Derived :: public Base $\{$

int y;

public:

$//$ void fun$()\{$ cout $<<$ "fun$()$ called"$<$